William Arthur Fields, MD
Diagnostic Radiology Physician · Laguna Hills, CA
William Arthur Fields, MD is a diagnostic radiology physician with a practice address in Laguna Hills, California, and NPI 1184781080, issued on Jan 2, 2007. Check the license (California G 14871, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William Arthur Fields
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- G 14871 CA
Self-reported in NPPES; status is on the state search - Practice location
- 23961 Calle DE LA Magdalena, Laguna Hills, CA 92653
- Phone
- (949) 855-4301
- Enumerated
- Jan 2, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (949) 855-1614
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Also registered at 23961 Calle DE LA Magdalena
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Arthur Fields in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G 14871Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
William Arthur Fields among 4,500 diagnostic radiology physician records in California
William Arthur Fields, MD is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 48% of them.
- NPI issued2007 · 48% of these records are older, 41% newer
- In a Medicare fileNo · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2007 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in California
There are 4,500 diagnostic radiology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 4,500 in California → Every provider in Laguna Hills → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Nancy Bucciarelli, M.D.Laguna Hills, CA 926531801948302
- Gretchen Conroy, M.D.Laguna Hills, CA 926531922272103
- Samantha Kubaska, M.D.Laguna Hills, CA 926531235174111
- Benjamin Lee, M.D.Laguna Hills, CA 926531538299334
- Gary Levine, M.D.Laguna Hills, CA 926531689614224
- Jon Loo, MDLaguna Hills, CA 926531871755017
- Andrew Malatskey, MDLaguna Hills, CA 926531881747756
- Lauralyn Markle, M.D.Laguna Hills, CA 926531396744793
Common questions
What is William Arthur Fields, MD's NPI number?
William Arthur Fields, MD's National Provider Identifier (NPI) is 1184781080, issued on Jan 2, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William Arthur Fields, MD located?
The NPPES record lists a practice address at 23961 Calle DE LA Magdalena, Laguna Hills, CA, 92653. Phone: (949) 855-4301. Providers update this record themselves, so call before visiting.
How can I verify William Arthur Fields, MD's license?
NPPES lists California license number G 14871, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.